Which revision correctly combines these two sentences?

Mallory has two cats named Salt and Pepper. They like to take afternoon naps.

Responses

Mallory has two cats named Salt and Pepper; And, they like to take afternoon naps.

Mallory has two cats named Salt and Pepper; And, they like to take afternoon naps.,

Mallory has two cats named Salt and Pepper; and they like to take afternoon naps.

Mallory has two cats named Salt and Pepper; and they like to take afternoon naps.,

Mallory has two cats named Salt and Pepper; they like to take afternoon naps.

Mallory has two cats named Salt and Pepper; they like to take afternoon naps.,

Mallory has two cats named Salt and Pepper; They like to take afternoon naps.

Mallory has two cats named Salt and Pepper; they like to take afternoon naps.